West Allis, city, Milwaukee County, southeastern Wisconsin, an industrial and residential suburb of Milwaukee; settled 1830s, incorporated as a city 1906. Printed materials, machine tools, power generation turbines, engines, and processed food are the chief manufactures. A technical college, the boyhood home of General Billy Mitchell, and the state fairgrounds are here. First known as North Greenfield, it was renamed in 1902, when the Edward P. Allis Company (which became Allis-Chalmers), a manufacturer, built a plant here. Population 63,982 (1980); 63,221 (1990); 61,254 (2000).
